My electric scooter has a 64v battery made up of 16x4v cells.
May I use an HP4067 multiplexer to read the 16 values or will it blow up?...
Erm... no.
If all the batteries are in series, and you connect this up with one input on each battery anode, then the first input will be fine, and you will get 4V. The second input would include both the first and second batteries, summing up to 8V. That's too much already, and will break the chip. Imagine what the 64V will do on the 16th input...
You will require a system which will connect to each battery completely separately with no reference to ground. There are ways of doing it, but they're not simple.
There are specially made chips (IC) for such measurements, Battery Management System (BMS), google it
I,'m googleing since one month without significant results =(
Aren't pin 1 and pin 16 electrically separated in the mux?
What about using two hp4067,one for positive andone for negative pin of the batteries?would it allow having always 4v max between the two outputs?
Or does it exist a 64v tolerant multiplexer? Where to buy it in eeurope?
Aren't pin 1 and pin 16 electrically separated in the mux?
Only in limited voltage range.
http://arduino.cc/forum/index.php/topic,67337.0.html
You've asked the same question here
http://arduino.cc/forum/index.php/topic,67337.new.html#new
Please stick to one thread or some of us are wasting time answering stuff that's already answered.
This subject has also been covered ad nauseam on the forum.
Rob
What about using two hp4067,one for positive andone for negative pin of the batteries?would it allow having always 4v max between the two outputs?
This idea will also not work.